Personally, I find completed residential properties interesting because buyers can evaluate the actual building, surrounding infrastructure, and quality of construction. Ready units are available with price per m², so you can immediately see on which floor and in which complex there are available lots. Looking through apartment options on https://buy-dubai.ae/properties/apartments I would pay particular attention to differences in pricing between floors and views within the same development. Service charges and potential rental income are also worth calculating before making a decision. How much extra would you be willing to pay for a higher-floor apartment with a better view?